Patents by Inventor Roger McLaren Ball

Roger McLaren Ball has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D411339
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: June 22, 1999
    Assignee: Construction Safety Association of Ontario
    Inventors: Steve Arthur Copeland, Roger McLaren Ball